An FBI report released Tuesday by Phoenix police who investigated the accident said FBI agents learned during a campaign finance investigation that Horne was having an affair with the woman, Assistant Attorney General Carmen Chenal, and that they used her apartment as a rendezvous site.

“Though motive is not an element of the criminal statute listed above,” the report said, referring to Arizona’s hit-and-run law, “it stands to reason that Horne did not want any record of his presence in the parking garage of Chenal’s apartment complex thus he did not leave a note.”

The parking garage for Chenal’s apartment complex was the scene of the accident, which occurred as Horne backed into a parked Range Rover while driving a car that Chenal had borrowed from a co-worker. Horne was cited last week on a misdemeanor charge of leaving the scene of a collision or unattended vehicle.

The FBI report was among documents, evidence photos and audio recordings of interviews released to The Associated Press under a public records request.